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- 1987 Andes Mountains, Chile/Argentina
- 1989 Rwenzori Mountains, Uganda/Zaire
- 1991 Mountains of Tasmania & New Zealand
- 1993 Central Highlands of Irian Jaya, New Guinea
- 1995 Ussuriland, Russian Far East
- 1997 South Africa, Lesotho, and return to Rwenzori Mountains, Uganda
- 1999 Nurseries and Mountains of Japan
- 2000 N.W. Yunnan, China, spring.
- 2001 N.W. Yunnan, China, summer.
- 2003 Mishmi Hills, Arunachal Pradesh, N. E. India.
- 2005 Mountains of central and southern Ecuador.
- 2006 Bale Mts., Ethiopia and return to Rwenzori Mts., Uganda.
- 2007 Return to Mishmi Hills, Arunachal Pradesh, N. E. India.
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